{
 "schema": "sync-leg-a-evidence-manifest-v1",
 "date": "2026-09-10",
 "documentType": "research report, plan section 4A (leg A): browser sender versus paced native producer, arrival timing at a reader",
 "newPerformanceMeasurements": true,
 "measurement": "arrival timing at a reader; counts are samples handed to a reader, never delivered pixels",
 "generatedAt": "2026-09-11T00:14:12.585250+00:00",
 "host": {
  "description": "an Apple M4 / 32 GiB host",
  "cpu": "Apple M4",
  "totalMemBytes": 34359738368,
  "macOS": {
   "productVersion": "26.5",
   "build": "25F71",
   "kernel": "25.5.0"
  },
  "power": "AC power throughout (battery 80 percent, not charging); no thermal or performance warning recorded",
  "scheduling": "harness, daemon, producer and consumer at nice 0; Chrome nice not recorded",
  "note": "one host, two runs of four arms each, serial sessions; other sessions and system indexers were active; CPU sampled at arm endpoints only, GPU not sampled, no idle baseline"
 },
 "fixtures": {
  "daemon": {
   "product": "Sync",
   "version": "0.2.65",
   "binary": "syncd",
   "sha256": "d157fe7447522ac63cbfd499ddf6b2c28e500760dc11615a4dbad62174f3a3cd",
   "sourceCommit": "d167ee4fefb12ad714f8b20023f4d2ddaed0e840",
   "restartedPerArm": true
  },
  "cameraExtension": {
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   "bundle": "io.noisefactor.sync.camera.systemextension",
   "sha256": "67bbc9fa19f5ed14a9525281f7750198eb78b5d1314e0646026227df40a69eba",
   "sourceCommit": "865cc2e319847e0e8ffb03b2cdc006b7bb5f0b1b",
   "sourceCommitNote": "asserted, not shown: the extension source is unchanged from 7fdfdc9 through d167ee4, but the mapping of the installed 0.2.38 build to this commit was not verified against the binary; one extension process served all eight arms"
  },
  "noisedeck": {
   "ref": "b7c0cb0ac3e89ea5aa5552e35dde642f6dbbad09",
   "shortRef": "b7c0cb0a",
   "sdk": "0.1.5",
   "note": "browser sender: Noisedeck A export through the SDK 0.1.5 frame sink; the export-queue engine is loaded at runtime and its version is not recorded"
  },
  "chrome": {
   "version": "Chrome/152.0.7977.83",
   "revision": "not recorded",
   "usedIn": [
    "run1 browser-chrome",
    "run1 native-chrome",
    "run1 browser-avf",
    "run2 native-chrome",
    "run2 browser-chrome",
    "run2 browser-avf"
   ]
  },
  "node": "v26.0.0",
  "macOS": {
   "productVersion": "26.5",
   "build": "25F71",
   "kernel": "25.5.0"
  },
  "python": "3.14.5 (standard library only) for analyze.py, stats.py and mechanism-stages.py",
  "avfConsumer": {
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    "sdkVersion": "26.5",
    "arch": "arm64"
   },
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     "bytes": 42540,
     "sha256": "91ce615968d012830336ee15137529943fa68f26071ad0647b5b7ec465612759"
    },
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     "sha256": "f9d43fab3637041a80609e86d58e91d487596da9c3530bb70e35190a2f076f9f"
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   "width": 1920,
   "height": 1080,
   "fps": 60,
   "periodNs": 16666667,
   "pacing": "absolute monotonic deadlines (setTimeout, Atomics.wait, spin) in a Node client of the staged daemon"
  }
 },
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   "label": "browser-chrome-20260910T215507Z",
   "cell": "browser-chrome",
   "run": "run1",
   "arm": "browser",
   "receiver": "chrome",
   "startedAt": "2026-09-10T21:55:08.065Z",
   "endedAt": "2026-09-10T21:55:54.151Z",
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   "manifestOk": true,
   "manifestValid": {
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    "reasons": []
   },
   "manifestWarnings": [],
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   "arm": "native",
   "receiver": "chrome",
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   "endedAt": "2026-09-10T21:56:35.292Z",
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   "manifestOk": true,
   "manifestValid": {
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   "run": "run1",
   "arm": "browser",
   "receiver": "avf",
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